Printing-machine.



PATENTED MAR. 26, 1907. H. STAMM. PRINTING MACHINE. APPLICATION FILED 00'1.12. 1906.

2 SHEETS-SHEET 1.

W GU

PATBNTED MAR. 26, 1907.

H. STAMM. PRINTING MACHINE. APPLICATION FILED-001212. 190.6.

2 SHEETS-SHEET 2.

' UNITED sTAT s PATENT oEEroE.

HENRY STAMM, OF REN'rzsoHMUHLE, NEAR JOOKETA, GERMANY, ASSIGNOR TO SCHNELLPRESSENFABRIK AOTIEN-GESELLSCHAFT, OF HEIDEL- BERG, GERMANY; I

PRINTING-MACHINE.-

Application filed October 12. 1906. Serial No. 338.663.

To alllwhom it may concern.-

Be it known that I, HENRY STAMM, engineer, a citizen of the Swiss Re ublic, residing at Rentz'schmuhle, near Jotfimta, Saxony,

Germany,- have invented certain new and useful Improvements in Printing-Machines, of which t e following is a specification.

The object of this mvention is to print on a continuously-traveling endless web of paperfrom a flat printing-surface; and the invention is equally ap licableto printing from type or planograp '0 surfaces.

'tain this result, the paper instead of being brought into direct contact with the printingsurface is printed indirectly throu h the agency of transfer-cylinders, preferab y covcred with some elastic mater al. 1 In order to enable several prints to be obtained from. the same transfer, the transfercylinder is brought into contact with one or more auxiliary equalizing-rollers of the same diameter as it or a multiple of it. These auxiliary rollers have anela'stic cover of rubtransfer-cylinder is elastic.

ber or the like or are of roller composition. They may have a hard surface also if the They serve to distribute the ink evenly by taking ink from v a fresh transfer and delivering it back to a transfer from which one or more prints have been taken.

Figures 1, 2, and 4 are diagrammatic vertical sections showing the application of this invention to flat-bed rinting machines. Fig. 3 is a art plan of Fig. 2. and 8 are iagrammatic vertical sections of new t es of machines.

In t e figures, F F are flat'.,printingforms which are re'ciprocated by any of the means used in ordinary flat-bed machines beneath the transfer-cylinders C and C, respectively. These cylinders O C are rotated continuously in the same direction as in socalled two-revolution presses. The cylinders C C are covered with elastic material, preferably rubber cloth,'and only come into contact with the forms F F when the latter are moving in one direction.

V V are the printing-cylinders on which the positive impressions on the cylinders O C are transferred as negatives. They may have either a hard onan elastic surface.

To ob- Figs.'5, 6, 7, i

' Patented March 26, 1907.

the reel R while it is being printed by the cylinders V -V'. V W W are the aum'liary equalizing-cylinders with elastic covers or made of roller composition. They are of the same or a multiple of the diameter of the cylinders V V, so that the impressions revolve in exact register. As already mentioned, these rollers W W regulate the even intensity of the print. They may be omitted in cases where no great importance is attached to each second, third, Stc., print, being of exactly the same intensity as the preceding.

Fig. 1 shows a combination of two flat-bed cylinder machi'nes placed one above. the other. The transfer-cylinder C has a circumference of exactly one sheet length. It turns three times durin the to-and-fro movement of the form F. t must therefore be slightly lifted on'the return of the form, as is l done in the case of two or multi revolution cylinder machines. The transfer cylinder C obtains thus a fresh; impression on its third rotation. It transfers the impression to the printing-cylinder V, which hasa circumfer ence of two sheet lengths or any other even number of sheet lengths. The impressions on the cylinder C are transferred alternately to the two halves of the circumference of the printing-cylinder V, which is thus given an uninterrupted impression, the auxiliary rollers W regulating the evenness of these im pressions. The paper comes from the reel R and runs round the impression-cylinder D Y and is therecontinuously printed on one side chine below, where it is similarly printed on the other side. It then passes, while still 'andfrom thence runs to theprintingi-maendless, to a folding apparatus T of any ordinary construction. is given to the form F by a mangle-gear M of ordinary construction, the driving-wheel of which has the same diameter as the trans fer-cylinder G, and consequently makes three revolutions in each complete cycle of working. Z and Z are intermediate wheels by which the upper and lower groups .V C D' 'and;,D V C are respectively driven. K is a wheel byfwhic'h the lower form is driven from the up erone. F and F is Fig. 2 shows the application of the invention to another comuction of ordinary per- Reciprocating 'motion Each half'of the forms edbydistributing-rollsLandLf.

, ence and are in contact with each other.

scribed before.

two. to three.

They make three revolutions for each comlete working cycle in which a six-sheet ength of paper is printed. The arrangement, therefore, is less advantageous than that shown at Fig. 1. One half of each cylinder is of less diameter than the other half, so that the return of the forms requires no lifting of the cylinders. The action of the printing-cylinders V V and the impression-cylinders D and D is the same as de- V and V, as shown, have a circumference of one'sheet length but they may have a circumference of any odd number of sheet lengths in order to receive a continuous impression from the transfer-cylinder C, which may have a circumference of two or any even number of sheet lengths. A certain difficulty arises in this arrangement in leading away the endless web of paper after it has been printed. In Fig. 2 this is done by means of turning bars a: :0, as often used in ordinary rotary machines. Fig. 3 is a plan showing these turning bars. The paper is printed in double breadth for an eight-paged newspaper, is cut lengthwise after printing by means of circular knives, and the two parts are brought out of the machine sidewise to folding and cutting apparatus of any ordinary kind. I

Fig. 4 shows a erfecting-press with the two transfer-cylin ers apart from each other.

In this case the endless printed paper may be led away direct without the use of turning bars to folding and cutting apparatus below the printing-forms.

Figs. 5, 6, 7, 8 show a special construction of a printing-machine for the application of the present invention. In this case the complete working cycle is equal to three sheet engths, so that for every three turns an impression is given on the transfer-cylinders C O. The latter are three sheet lengths in circumference and are of lessened diameter for two thirds of their circumference, the

.other third being provided with the elastic cover which receives the transfer when the form is moving forward, which occupies onethird of the whole working period. During the passage of the sunk part of the continuously-rotating cylinder the form returns without printing, no lifting of the cylinder being necessary. The raised parts of the transfer-cylinders CC carry the transfers to the printing-cylinders V V. The latter have a circumference of two sheet lengths or any even number of the same, thus getting impressions constantly in the proportion of the omission of the impression-cylinders D D, as described in the former arrangements, the endless aper here running direct between the printing-cylind ers V V and being This construction allows of as in Fig. l, the two parts being inked on left and right, respectively, of the transfercylinders C C. The part of the latter which is of less diameter for two-thirds of the circumference serves as a distributing-table for the ink, the latter being carried from the duct Q by a doctor-roller and is spread by distributing-rollers r. Side inclines are provided to lift these rollers 1" 1' to allow the one-- third of the cylinder which is covered with the elastic material and is of larger diameter to pass without touching. By means of the rollers h and v the ink is transferred from the distributing-table of the cylinders C C onto the groups of formrollers a and a.

Fig. 6 shows another arrangement for the inking of a somewhat similar construction to Fig. 5, with one group of form-rollers instead of two for each form. The transfer-cylinder 9 C in this arrangement is reduced to a segment of one-third of a circle. During the two-thirds of the revolution when the transfer-cylinder does not touch, the form-rollers of group b are moved successively into the positions I) b by means of the swinging arm y in order to ink the whole form.

Figs. 7 and 8 show another way of inking an undivided form. In thiscase the group of form-rollers d always remains in the central position of the transfer-segment, which is, as before, reduced to one-third of a circle, the group (1 is being lifted to the inside of the transfer-segment while the latter is in contact with the form, so that the distributingrollers run on the inner surface of the segment, as shown in Fig. 8. The axle N of the segment is stationary, and the bearings of the distributing-rollers are carried by slides which are moved up and down in guides q. The inner surface of the segment C serves as a distributing-table. The ink is supplied from a duct K, from which it is spread by means of a doctor'K on the table T, from which it is taken by the distributing-rollers d when in the position shown in Fig. 7.

One of the main features of the presentinvention is the continuous rinting during the whole cycle, and it is applicable not on y to endless webs of paper, which are out after being printed, but also to all sizes of sheets where the paper is out before rinting. For this purpose the construction s iown at Fig. 5 is specially adapted where the printing and perfecting cylinders V V come in direct contact, and by means of a pair of cutting-cylinders e and s the sheets may be out before printing and rundirect between the two cyl-' riable size is far easier than in the heretoforeknown rotary machines for all sizes, as no transfer of the paper from one cylinder to the other is necessary.

If positive types or printing-surfaces instead of negative ones are employed, one set oftransfer-cylinders may 'beomitted, the print being eflected on paper conducted directly between the cylinders C C.

What I claim is 1. The combination of a reciprocating flat form, a continuously-revolving transfer-cylinder which is in contact with the form when the latter is moving in one but not in the other direction, a printing-cylinder revolving in contact with the transfer-cylinder, and an impression-cylinder revolving in close proximity to the printing-cylinder and adapted to press the paper into contact with it.

2. The combination of a pair of reciprocating flat forms, a pair of continuously-revolving transfer-cylinders each in contact with one of the forms when the latter is moving in one but not in the other direction, and a pair of printin ,cylinders revolving in contact with each ot er andeach in contact with one of the transfer-cylinders.

3. The combinationof a pair of reciprocating flat forms, a pair of continuously-revolving transfer-cylinders each in contact with one of the forms when the latter is moving in one but not in the other direction, a pair of printin -cylinders revolving in contact with each ot er and each in contact with one of the transfer-cylinders, and equalizing-rollers EGVOlViIlg 'in contact with the printing-cyliners.

4. The combination of a reciprocating flat form, a revolving transfer-cylinder, part of the periphery of which comes into contact with the form, means for sup lying ink to part of the surface of the cylin er, dlstributmg-rollers s reading the ink on thesurface,

and means 'or transferring the ink from the surface to the form.

5. The combination of a pair of reciprocatmg flat forms, a pair of continuously-revolving transfer-cylinders each. in contact with one of the forms when the latter is moving in one but not in the other direction, a pair of 7 rotating 6. The combination of a pair of reciprocating fiat forms, a pair of continuously-revolving transfer-cylinders each in. contact with one of the forms when the latter is moving in one but not in the other direction, a pair of printin cylinders revolving in contact with each ot er and each in contact with one of the transfer cylinders, equalizing-rollers revolving in contact with the printing-cylinders, means for supplying ink to part of the surface of the transfer-cylinders, distributing-rollers spreading the ink on the surfaces,

and means for transferring surfaces to the forms.

7,. The combination of a reciprocating flat form, a continuously-revolving cylinder part of its periphery being of greaterdiameter than the remainder and having a siufface adapted for receiving transfers such surface coming into contact with the form when the latter is moving in one but not in the other direction, continuously-rotating printing the ink from the said surface, means for sup lying ink to the surface of part of the first cy inder which is of less diameter than the transfer-surface, distributin rollers spreadin the ink on the surface, an means for trans? it to the form.

cylinder intermittently in contact with the erring the ink from 8. The combination of a reciprocating flat 5 distributingrollers spreading the ink on the surface, means-for transferring theink from it to the form, and an equalizing-roller revolvin in contact with the printing-cylinder.

9. he combination of a pair of reciprocating flat forms, a pair of continuously-revolving cylinders, part of their periphery being of greater diameter than the remainder and havmg a surface ada ted for receiving transfers such surface coming into' contact with one of the forms when the latter is moving in one but not in the other direction, continuouslyprinting-cylinders in contact with each ot the transfer-surfaces, means for suppl ink to parts of the surfaces of the first cylin-- ders which are of less diameter than the transfer-surfaces, distributing-rollers spreading the ink on these surfaces, and means for transferring the ink from them to the forms.

10. The combination of a pair of reciproeating flat forms, a pair of continuously-revolving cylinders, part of their eiiphery being of greater diameter than t e remainder er and intermittently in contact with & M8964 the transfer-surfaces, distributing-rollers 10 transfers such surface coming into contact spreading the ink on these surfaces, means with one of the forms when the latteris movfor transferring the ink from them to the ing in one but not in the other direction, conforms, and equalizing rollers revolving in and having a surface adapted for receiving tinuouslv-rotating printing-cylinders in 0011- I contact with the printin -cy1inders.

tact with each other and intermittently in 2 ENRY STAMM. co'ntact with the transfer-surfaces, means for 'Witnesses: e supplying ink to parts of the surfaces of the GEORG RICHTER,

first cylinders which are of less diameter than ROBERT B. RANsFoRD. 

